The VC firm’s co-founder Ben Horowitz cautions that it’s too early to make any judgments about the fund’s performance, which is usually assessed on a decade-long time horizon. But so far, he said, “It’s one of the best funds, like, I’ve ever seen.” As with so much in AI investing right now, however, it’s unclear whether a16z’s success with the fund defies an AI bubble or exemplifies it.Those bets are starting to pay off. In recent months, Stripe Inc. ( STRI.PVT ) agreed to buy Andreessen-backed billing plat ...